We Are Ophthalmology LTD We Care About Your Health

Over the years, Ophthalmology LTD's name has become associated with the highest quality of comprehensive medical and surgical eye care. Highly trained ophthalmologists David West, Bryan Hammer, Gregory Osmundson, Eric Thomas, Dustin Dierks, Ryan Geraets, Michael Eide, Elizabeth Atchison, and Elise In’t Veld, as well as experienced optometrists Andrea McCann and Emily Walters combine their considerable expertise to give each and every patient the best possible care. Ophthalmology LTD delivers treatment for cataracts, glaucoma, diabetic eye disease, as well as cornea transplants, oculoplastic surgery, retina surgery, vitreoretinal surgery, and pediatric eye care in Sioux Falls.

The Finest Eye Specialists in the Tri-State Area

Ophthalmology LTD brings the finest eye specialists in South Dakota to satellite offices in the tri-state area: Luverne, Pipestone, Worthington and Windom in Minnesota, Rock Valley, Sibley, and Sioux Center in Iowa, as well as Dell Rapids, Madison, Mitchell, and Yankton in South Dakota.


In 1968, Ophthalmology LTD revolutionized eye care by taking a comprehensive approach, bringing patients a full range of vision specialties under one roof. Today, eye care teams across the nation are now mimicking the strategy we have spent more than 50 years perfecting. It is because of this experience and our genuine dedication to our patients that our team is widely considered the finest, most comprehensive group of sub-specialty eye surgeons in the tri-state Siouxland area.

Our Services

Our ophthalmologists have expertise in a wide range of specialties and work as a team to meet your eye care needs.


Not only is cataract treatment the most frequently performed surgery in the United States, it is also one of the most successful. More than 99% of patients who undergo cataract removal rank their vision as significantly improved. Drs. Osmundson, Hammer, Dierks, Eide, In't Veld, and West perform this highly effective procedure.

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Early detection and treatment is the key to preventing vision loss with Glaucoma. More than three million Americans have glaucoma, but only half are actually aware that this "silent thief" is slowly and without warning stealing away their vision, sometimes without any noticeable symptoms. Drs. Osmundson and In't Veld  at Ophthalmology LTD specializes in the diagnosis and treatment of glaucoma.

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Children should have a yearly comprehensive eye exam along with their parents. Many vision problems can be detected early and treated before they become detrimental to a child's development, learning abilities, and every day function. Dr. West of Ophthalmology LTD has 22 years of experience in the evaluation and treatment of children's vision.

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The retina functions much like the film in a camera, and when film is damaged, so is the picture. Our retinal specialists Drs. Geraets, Thomas, and Atchison  offer comprehensive retinal exams and treatment to protect against diseases such as diabetic retinopathy that can damage your retina and vision.

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If a window pane is distorted or marred by imperfections, it is difficult to see out through it clearly. Your cornea is your eye’s window. To keep it clear or to restore it to its proper state, Dr. Eide of Ophthalmology LTD uses his specialty training in corneal diseases to treat dry eye, keratoconus, and other conditions that can cause corneal imperfections.

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When your eyelids, eye sockets, or tear ducts malfunction, or a tumor threatens your vision, Ophthalmology LTD oculoplastic surgeon Dr. Hammer can help. Specializing in procedures that restore clear vision as well as a more youthful appearance, Dr. Hammer treats and manages a wide variety of ocular conditions.

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We are a team of passionate professionals with
caring for patients in South Dakota, Minnesota, & Iowa.

Have a look around, then call, request an appointment online, or come by to learn more about how our team of eye experts can help you and your family.

  • Diallo U.

    Amazing good customer service.

  • Bob G.

    I have been going there several years now, they always treat you great and do a very good job.

  • Dave K.

    I had my second experience with a small tear in a retina. The first was in the right eye this second time was the left. Since I had been through this experience before I had a good idea what was... read more

  • Donna U.

    Dr Thomas is very kind and considerate of his patients. I feel so comfortable with him and his care plan. He truly cares about his patients and answers questions to where you understand.

  • Alan B.

    Very happy with the concern for my lower eye lid cancer

  • Lynn B.

    Dr. Thomas is the best!! Friendly, informative, and answers all my questions. Highly recommended!!

  • David H.

    Great people and facilities!

  • Rose L.

    I love the staff here. When you check in you are met with a smile and shown courtesy. When called back for your medical review and eye tests you are treated with respect and kindness. There is plenty of laughter... read more

  • Hewan G.

    They are very professional !

  • Kathleen S.

    My experience there was top notch from start to finish. Everyone was very pleasant and professional.

  • Ramona B.

    I really appreciated this provider working me into her busy schedule for my eye emergency. Her care was thorough but very time efficient which I was very grateful for as my appointment was on the day of my fathers... read more

  • Peter A.

    Great experience as always. I’ve been a patient for 29 years and impressed with the quality of care. The physician and staff are professional and very caring. Simple the best comprehensive eye care in Sioux Falls.

  • Roy W.

    I have a left eye that acts up at different times of the year, it will cause some pain almost the same as a migraine , it also becomes sensitive to light as if it has to much light.... read more

  • Regina B.

    Dr McCann was courteous, professional, and informative

  • Carol L.

    Being here from AZ and having concerning eye issues, I was so impressed with the customer service and the feeling of truly caring about me, beginning with the phone call and getting an appt within the hour, to the receptionist... read more

  • Shirley R.

    They were very prompt about getting me done. Explain each text. Very pleasant and worked with my schedule. Thank you

  • Liz H.

    Excellent service. We had emergency surgery and everyone was amazing.

  • Paul-Anthony C.

    I was a little nervous but quickly felt well taken care of. Great staff.... Great experience!!

  • Leo R.

    I have gotten great help from all the staff. Dr Elizabeth has been very helpful and concerned about me every time I have been seen by her and I would recommend her to anyone that has it eye problems.

  • Lanae B.

    Dr's & staff are very kind, informative & ready at all times to take care of your needs. They do great work, I wouldn't go anywhere else.

  • Kathy-Larry M.

    The entire staff and Doctors are excellent.
    I have been using their Services for many years. Would never consider any other Group for my Eye Care.

  • Richard R.

    The epitome of professionalism, everyone at Opthalmology was concerned, competent, and caring. I would give 6 stars, if allowed.

  • Lennie S.

    Very courteous and thorough staff. Everyone listened to all of my questions and concerns and provided easy to comprehend answers.

  • Judy H.

    Its a great place with great people who treat you right. they take time with their patients and answer all your concerns
    I would recommend them to whoever need their services.
    I like Dr. Hammer, one of the great dictors there...
    read more

  • Terry N.

    My family has received excellent care from the Ophthalmology Ltd. team. Very friendly, warm and professional. My most recent visit was with Dr. Walters and I would recommend her to everyone.

  • Carol K.

    Staff all very friendly and caring. Tests and visit all completed promptlyDR. Atchison was very knowledgeable and explained everything clearly and I felt I would be provided excellent care.

  • Chris R.

    My experience at Ophthalmology LTD has been rewarding. All the staff have always been pleasant. My wait times are always satisfactory. My preliminary testing on my eyes is professional and thorough. Dr. Hammer is the best.... read more

  • Alice M.

    I have always been so very pleased with the service I get, from the front desk ,the assistance and the Doctors.

  • Leanne V.

    very good had a wonderful experience. very informative on the problem with my eyes.

  • Heidi F.

    Very friendly staff. Everything was explained at each step and all my questions were answered. Dr. Atchison explained my options and spent time to be sure I understood everything.

  • Pablo D.

    Dr Eide is a very profesional and kind doctor. I felt very nervous about my eye and he made me feel very comfortable. His staff was very kind too. They were so great to work me in last minute on... read more

  • Julie K.

    Very professional. Got in and out within an hour. Gave me all the information pertinent to my situation and explained everything. Very happy with my experience there.

  • Gary S.

    Very pleased with the office. Prompt and explained everything thoroughly. Will definitely recommend Dr. Atchison and her team.

  • Tony V.

    My experience at ophthalmology Ltd was good. Everyone was very helpful, and made me feel comfortable during my visit. I appreciated the helpful advice that informed me how the procedure works, and what steps to take.

  • Paula R.

    Dr McCaann is friendly and knowledgeable and really cares about her patients.

  • Kathy A.

    Dr Eide and his nurse Jane were so professional and took the time needed for any questions. I felt so at ease during my appointment. Dr Eide has a warm presence and personality that made me feel very comfortable. The... read more

  • Darrell C.

    Excellent staff and Dr Hammer explains everything he is going to do years of pain gone when I woke up from eye surgery feel free to contact me if any questions Darrell Clausen

  • Janet C.

    I was put at ease by Dr. Geraet’s professional manner. He confirmed a serious eye diagnosis in a matter-of-fact way that helped me accept it. I was given explanation of the condition as well as reason to be grateful... read more

  • V J.

    I've just returned from Tucson and Retinal Associates there. Dr Thomas approach to the wet AMD was without the after pain I had after the shot in AZ. I felt very comfortable in their

  • Sandy G.

    The staff and Dr.'s are the very Best in the region!!

  • Bonnie G.

    One is moved right along. Everyone is pleasant and friendly. Dr. Hammer was pleasant and friendly. I recommend this ophthalmology service.

  • Sherry G.

    Great service! Very nice Dr. Everything was explained in understandable words. So happy that I got good news!
    Thank you!

  • Ashley H.

    Dr. West has been my provider for the past 30 years. I’ve always been treated well and provided excellent care.

  • Mark L.

    The staff was very friendly and explained everything they were doing as it was happening. The opthamologist gave me his honest opinion on the pros and cons of the different types of lenses.

  • Alan T.

    Very complete exam! Very professional!

  • Олександр П.

    I was there on Friday! I like that clinic so much!

  • Greg H.

    Employees are professional the whole system seems very clean and inviting very efficient if they tell you to be there on time you better be there that’s why I like it thanks for the great experience

  • Sandy P.

    I thought they all did an amazing job. I felt very comfortable.i would highly recommend them.

  • Joan B.

    Very helpful. Get to the bottom of the problem .

  • Marianne P.

    Dr. Gregory D. Osmundson of Ophthalmology Ltd, in the Sioux Falls SD location is very knowledgeable and professional. My future eyesight is in his hands and I trust his judgment 100+ percent. He explains things well and treats you as... read more